/* Page de leçon (lecon.html) : onglets, liste de fichiers, aperçu des pages PDF */
.lc-wrap{width:min(1000px,94%);margin:26px auto 30px}
.lc-tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}
.lc-tabs .pill{white-space:nowrap;display:inline-flex;gap:7px;align-items:center}
.lc-tabs .pill small{font-size:12px;opacity:.75}
.lc-list{display:grid;gap:10px;margin:16px 0}
.lc-item{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:#fff;border:1.5px solid var(--line);border-radius:16px;padding:12px 14px;transition:border-color .2s}
.lc-item.on{border-color:var(--blue);box-shadow:0 8px 22px rgba(20,86,240,.12)}
.lc-n{flex:none;width:34px;height:34px;border-radius:10px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-weight:800}
.lc-t{flex:1 1 180px;min-width:0;font-weight:700;overflow-wrap:anywhere}
.lc-t small{display:block;font-weight:600;color:var(--muted);font-size:12px}
.lc-a{display:flex;gap:8px;flex-wrap:wrap}
.lc-b{font:inherit;font-size:14px;font-weight:700;padding:9px 14px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--text);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px;transition:.2s}
.lc-b:hover{border-color:var(--blue-2)}
.lc-b.pri{background:var(--blue);border-color:var(--blue);color:#fff}
.lc-b.ok{border-color:#1fb58a;color:#0b6e4f;background:#e8f8f1}
.lc-viewer{border:1px solid var(--line);border-radius:18px;background:var(--soft);overflow:clip;margin-top:8px}
.lc-bar{position:sticky;top:64px;z-index:5;display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 12px;background:var(--surface);border-bottom:1px solid var(--line)}
.lc-bar b{flex:1 1 160px;min-width:0;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lc-bar .lc-b{padding:7px 12px;font-size:13px}
.lc-pg{font-size:13px;font-weight:700;color:var(--muted);white-space:nowrap}
.lc-scroll{overflow-x:auto;padding:14px 0}
.lc-pages{display:flex;flex-direction:column;gap:12px;align-items:center;margin:0 auto;width:100%}
.lc-page{width:calc(100% - 24px);background:#fff;box-shadow:0 4px 16px rgba(10,30,90,.14);position:relative}
.lc-page canvas{display:block;width:100%;height:100%}
.lc-page:not(.ready):after{content:"";position:absolute;left:50%;top:50%;width:26px;height:26px;margin:-13px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--blue);animation:lcspin .8s linear infinite}
@keyframes lcspin{to{transform:rotate(360deg)}}
.lc-msg{padding:34px 20px;text-align:center;color:var(--muted)}
.lc-msg .lc-b{margin-top:14px}
.lc-frame{display:block;width:100%;height:75vh;border:0;background:#fff}
.lc-img{display:block;max-width:100%;margin:0 auto}
.lc-video{position:relative;aspect-ratio:16/9;margin:12px 0;border-radius:16px;overflow:hidden;background:#000}
.lc-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.lc-nav{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:30px}
.lc-nav a{flex:1 1 220px;padding:14px 16px;border:1.5px solid var(--line);border-radius:16px;background:#fff;font-weight:700;color:var(--text)}
.lc-nav a small{display:block;color:var(--muted);font-weight:600;font-size:12px}
.lc-nav a.nx{text-align:right}
.lc-extra{margin:14px 0 0;display:flex;gap:8px;flex-wrap:wrap}
/* choix de la matière (cours.html) */
.subj-pick h2{font-size:22px;margin:6px 0 16px}
.subj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.subj-card{font:inherit;text-align:left;display:flex;align-items:center;gap:14px;padding:18px;border-radius:18px;border:1.5px solid var(--line);background:#fff;color:var(--text);cursor:pointer;transition:transform .2s,box-shadow .2s,border-color .2s}
.subj-card:hover{transform:translateY(-3px);border-color:var(--blue-2);box-shadow:0 12px 28px rgba(20,60,160,.14)}
.subj-ico{flex:none;width:48px;height:48px;border-radius:14px;background:var(--soft);display:grid;place-items:center;font-size:24px;font-weight:800;color:var(--blue)}
.subj-card b{display:block}.subj-card small{color:var(--muted);font-weight:600}
.c-mat{display:inline-block;margin-inline-start:8px;font-size:11px;font-weight:800;padding:2px 8px;border-radius:99px;background:var(--soft);color:var(--blue);vertical-align:middle}
body.dark .lc-item,body.dark .lc-b,body.dark .lc-nav a,body.dark .subj-card{background:var(--surface);color:var(--text);border-color:var(--line)}
body.dark .lc-b.pri{background:var(--blue);color:#fff}body.dark .lc-b.ok{background:#12352b;color:#7ee2bd}
body.dark .lc-page{background:#fff}
@media(max-width:820px){.lc-bar{top:70px}.lc-frame{height:70vh}}
html[dir=rtl] .lc-nav a.nx{text-align:left}html[dir=rtl] .subj-card{text-align:right}